package book;

public class BookList {
    private  Book[] books=new Book[10];
    private  int usedSize;//表示当前书架上书的有效个数

    //调用该构造方法时书架上预先存放3本书
    public BookList(){
        books[0]=new Book("三国演义","罗贯中",10,"小说");
        books[1]=new Book("西游记","吴承恩",15,"小说");
        books[2]=new Book("红楼梦","曹雪芹",5,"小说");
        usedSize=3;
    }
    public Book getBook(int pos){    //获取pos下标的书
        return books[pos];

    }
    public void setBook(int pos,Book book){    //在pos下标处放一本书book
        books[pos]=book;

    }
    public int getUsedSize(){
        return usedSize;
    }
    public void setUsedSize(int usedSize){
        this.usedSize=usedSize;
    }
}
